<!doctype html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: highlight selectors getComputedStyle</title>
<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-selectors">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  #target::selection {
    background-color: green;
    color: lime;
  }
  #target::target-text {
    background-color: green;
    color: lime;
  }
  #target::spelling-error {
    background-color: green;
    color: lime;
  }
  #target::grammar-error {
    background-color: green;
    color: lime;
  }
  #target::highlight(foo) {
    background-color: green;
    color: lime;
  }
  #target::highlight(bar) {
    background-color: blue;
    color: yellow;
  }
</style>
<div id="target"></div>
<script>
  for (const pseudo of ["::selection", "::target-text", "::spelling-error", "::grammar-error", "::highlight(foo)"]) {
    test(() => {
      let style = getComputedStyle(target, pseudo);
      assert_equals(style.backgroundColor, "rgb(0, 128, 0)", "Background color is green.");
      assert_equals(style.color, "rgb(0, 255, 0)", "Color is lime.");
    }, `getComputedStyle() for ${pseudo}`);

    for (illFormedPseudo of [`${pseudo}:`, `${pseudo})`, `${pseudo}(`, `${pseudo}(foo)`, `${pseudo}()`, `:${pseudo}`, `${pseudo}.`]) {
      test(() => {
        let style = getComputedStyle(target, illFormedPseudo);
        let defaultStyle = getComputedStyle(target);
        assert_equals(style.backgroundColor, "");
        assert_equals(style.color,  "");
      }, `getComputedStyle() for ${illFormedPseudo} should return an empty CSSStyleDeclaration`);
    }
  }

  const pseudo = "::highlight(bar)";
  test(() => {
    let style = getComputedStyle(target, pseudo);
    assert_equals(style.backgroundColor, "rgb(0, 0, 255)", "Background color is blue.");
    assert_equals(style.color, "rgb(255, 255, 0)", "Color is yellow.");
  }, `Different getComputedStyle() for ${pseudo} and same element`);
</script>
